Which of the following is not found in a DNA molecule?

A. nitrogen

B. carbon dioxide

What is the unit of heredity

The extra chromosome which produces Down's syndrome is: Options: an autosome a "X" chromosome a "Y" chromosome either "X" or "Y" chromosome

How do the external structures of the respiratory system coordinate with the internal structures of the respiratory system in the process of respiration?

Monosaccharides are the simplest form of carbohydrates. They can be combined to form more complex carbohydrates known as polysaccharides, which are typically used for long term energy storage within a cell.

Which of the following statements best describes how science has developed over time

The three structural components of the modal model of memory are:

Which book is considered the catalyst of the modern environmental movement?

By which process are CO2 and H2O converted to carbohydrates?

T/F Metamorphic rocks are formed by a combination of heat, pressure, or hot fluids acting on an igneous, sedimentary or other metamorphic rock.

Which organism in the above pyramid has the least available energy